1002221021001 has 8 divisors (see below), whose sum is σ = 1336386111264. Its totient is φ = 668101639040.

The previous prime is 1002221020987. The next prime is 1002221021057. The reversal of 1002221021001 is 1001201222001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002221021001 - 2¹⁹ = 1002220496713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1002221021701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11375880 + ... + 11463641.

It is an arithmetic number, because the mean of its divisors is an integer number (167048263908).

Almost surely, 2^{1002221021001} is an apocalyptic number.

It is an amenable number.

1002221021001 is a deficient number, since it is larger than the sum of its proper divisors (334165090263).

1002221021001 is a wasteful number, since it uses less digits than its factorization.

1002221021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22854151.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1002221021001 its reverse (1001201222001), we get a palindrome (2003422243002).

The spelling of 1002221021001 in words is "one trillion, two billion, two hundred twenty-one million, twenty-one thousand, one".